Dust Box, Dust Box Assembly and Cleaning Device

ABSTRACT

The present application discloses dust boxes, dust box assemblies and cleaning devices, wherein the dust box assembly includes a dust box and at least two fans. The dust box is formed with a holding cavity, a dust suction port and at least two air outlets, the dust suction port is connected to the holding cavity, the at least two air outlets are connected to the holding cavity. At least two fans are provided corresponding to at least two air outlets for creating an airflow that passes through the dust suction port, the holding chamber and the air outlet in sequence.

TECHNOLOGY FIELD

This application relates to the technical field of a dust box, a dust box assembly, and a cleaning device.

BACKGROUND

With the improvement of people's living standards and the rapid development of intelligent equipment technology, intelligent cleaning equipment such as sweeping robots, dusters, vacuum cleaners, etc. are widely welcomed. The Internet of Things technology makes everything connected, and makes the market for intelligent cleaning equipment even broader.

The cleaning efficiency and effectiveness of the current smart :leaning equipment needs to be improved.

SUMMARY

The main technical problem solved by the current application is to provide a dust box, a dust box assembly and a cleaning device, which can effectively improve the cleaning efficiency and effectiveness.

The present application provides a dust box assembly including a dust box and at least two fans. The dust box is formed with a holding cavity, a dust suction port and at least two air outlets, the dust suction port is connected to the holding cavity, the at least two air outlets are connected to the holding cavity. The at least two fans are provided corresponding to the at least two air outlets for extracting air through the air outlets to form an airflow that passes through the dust suction port, the holding cavity and the air outlet in sequence.

The present application further provides a dust box with a holding cavity, a dust suction port and at least two air outlets, the dust suction port is connected to the holding cavity, and at least two air outlets are connected to the holding cavity. Each air outlet is connected to a fan, so that the fan extracts air through the air outlet, thus forming an airflow through the dust suction port, the holding cavity and the air outlet in turn.

The present application further provides a cleaning device including a device body and the above mentioned dust box assembly provided in the device body.

The beneficial effect of the present application is: by setting at least two fans corresponding to at least two air outlets, each fan connects to the air outlet for air extraction and forms two air ducts inside the dust box, so that two air streams can work together to enhance the suction power, thus the air in the holding cavity can be removed more quickly, and the suction port can generate a stronger suction to suck in garbage. Compared to cleaning device with a single fan and a single duct, this embodiment can suck in debris with larger size, garbage with heavier mass, and can effectively improve the cleaning effect of cleaning device.

DETAILED DESCRIPTION OF DRAWINGS

FIG. 1 is a schematic diagram of the structure of the dust box assembly of an embodiment of the present application.

FIG. 2 is an exploded diagram of the structure of the dust box assembly of an embodiment of the present application.

FIG. 3 is a cross-sectional diagram along A-A direction of the dust box assembly of an embodiment of the present application.

FIG. 4 is another exploded diagram of the structure of the dust box assembly of an embodiment of the present application.

FIG. 5 is an exploded diagram of another structure of the dust box assembly of an embodiment of the present application.

FIG. 6 is a schematic diagram of part of another structure of the dust box assembly of an embodiment of the present application.

FIG. 7 is an exploded diagram of a third structure of the dust box assembly of an embodiment of the present application.

FIG. $ is another exploded diagram of the third structure of the dust box assembly of an embodiment of the present application.

FIG. 9 is a schematic diagram of part of the third structure of the dust box assembly of an embodiment of the present application.

FIG. 10 is a schematic diagram of a position of a connecting hole in the third structure of the dust box assembly of an embodiment of the present application.

FIG.11 is another schematic diagram of the position of the connecting hole in the third structure of the dust box assembly of an embodiment of the present application.

FIG. 12 is a schematic diagram of a connector of the dust box assembly of an embodiment of the present application.

FIG. 13 is another schematic diagram of a connector of the dust box assembly of an embodiment of the present application,

FIG. 14 is a schematic diagram of the structure of a cleaning device of an embodiment of the present application.

DETAILED DESCRIPTION OF E ABODIMENTS

The technical solutions in the embodiments of this application will be dearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application, and it is clear that the embodiments described are only some of the embodiments of this application and not all of them. Based on the embodiments of this application described in this application, all other embodiments obtained by a person skilled in the art without creative labor shall fall within the scope of protection of this application.

The inventors discovered after a long period of research that cleaning devices such as vacuum cleaners or floor sweepers rely on negative pressure to suck up debris, garbage, dust, etc. To obtain stronger negative pressure and suction, the most common practice in the industry is to increase the volume of the fan or the fan speed, but increasing volume will significantly increase noise, and increasing the fan speed will decrease the life of the fan, while the obtained suction is very limited. To solve the above problems, the inventor provides following embodiments after a long period of research and development and testing.

Referring to FIG. 1, the dust box assembly 1 depicted in an embodiment of the present application includes dust box 10, fan 21, etc.

Referring to FIG. 2, the dust box 10 could be used to hold trash, such as debris and dust that are being sucked up. The dust box 10 has a holding cavity 100, sucked trash such as debris and dust are hold in the holding cavity. The dust box 10 also has a dust suction port 110 that connected to the holding cavityl00. The trash sucked by the holding cavity 100 through the dust suction port 110. The dust box 10 may also have at least one air outlet 120. For example, the dust box 10 has at least two air outlets 120, the two air outlets 120 connected to the holding cavity 100. After the garbage enters the holding cavity 100 with air through the dust suction port 110, the air then flows out through the outlet port 120. In this way, with the function of the fan 21, the dust suction port 110, the holding cavity 100, and the air outlet 120 form a channel through which the air flows. The dust box 10 is also configured with at least two interspaced connecting holes 1211, and the holding cavity 100 is connected to the air outlets 120 through the two connecting holes 1211.

The number of fans 21 is at least one, corresponding to at least one air outlet 120. That is, the two fans 21 located at the two air outlets 120 correspondingly, fans 21 and air outlets 120 are correspond one by one. The fans 21 are used to extract air through the outlets 120, while creating airflow between the dust suction ports 110 to the outlets 120. The location and specific structure of the fans 21 and outlets 120 are not limited to the examples presented in FIG. 1 and FIG. 2.

As shown in FIG. 1 and FIG. 2, to make the fans 21 and the outlets 120 fit better, facilitate their connection, and better adapt to the structure of the dust box 10, the dust box assembly 1 further includes connectors 22. The number of connectors 22 is at least two. The fans 21, connectors 22 and air outlets 120 correspond to each other one by one. The fan 21 is connected to the corresponding connector 22, and is connected to the corresponding air outlet 120 through the corresponding connector 22. The fan 21 is connected to the corresponding air outlet 120 through the corresponding connector 22, i.e., it is possible to extract air from the air outlet 120 inside the holding cavity 100 through the connector 22. A connector 22 and a fan 21 can be used as a set of dust suction assembly 20. The dust box assembly 1 of this embodiment can be provided with a plurality of air outlets 120 and a plurality of dust suction assembly 20 correspondingly.

By setting at least two fans 21 corresponding to at least two air outlets 120, each fan 21 connects to the air outlet 120 for air extraction and forms two air ducts inside the dust box 10, so that two air streams can work together to enhance the suction power, thus the air in the holding cavity 100 can be removed more quickly, and the suction port 110 can generate a stronger suction to suck in garbage. Compared to cleaning device with a single fan and a single duct, this embodiment can suck in debris with larger size, garbage with heavier mass, and can effectively improve the cleaning effect of cleaning device.

Further, connectors 22 are set with the fans 21 to connect the air outlets 120 to facilitate the installation of the fans 21 and the structural arrangement and design of the whole assembly. The connectors 22 can extend the length of the air ducts, which can make the airflow speed faster and can further enhance the suction power and cleaning effect of the dust suction port 110.

Referring to FIG. 2 and FIG. 3, the dust box 10 is further configured with an access cavity 101. The access cavity 101 and the holding cavity 100 are provided adjacent to each other in the thickness direction of the dust box 10, and the access cavity 101 is connected to the holding cavity 100. The access cavity 101 is connected to the air outlets 120. Therein, the access cavity 101 is located downstream of the airflow compared to the holding cavity 100 under the suction of the fan 21. In other words, when the fan 21 performs suction, air enters the holding cavity 100 from the dust suction port 110, then enters the access cavity 101 from the holding cavity 100, and is finally discharged through the connector 22 and the fan 21, which is located downstream of the holding cavity 100 in the direction of airflow.

By providing the access cavity 101 connected to the air outlet 120, the circulable space in the dust box 10 is increased. Further, it facilitates the arrangement and design of multiple air outlets 120, which in turn facilitates the setting of multiple fans 21 and connectors 22, which in turn form multiple air ducts. The fans 21 do not directly pump the air in the holding cavity 100, but through the access cavity 101, which is more conducive to the holding cavity 100 for waste deposition, further enhancing the suction power of air and cleaning effect.

As shown in FIGS. 2 and 3, when the number of air outlets 120 is two, for example, the two air outlets 120 forms in two opposite sides of the dust box 10. For example, the two air outlets 120 are arranged in a direction perpendicular to the thickness direction of the dust box 10 and is aligned substantially with the length direction of the dust suction port 110. The dust suction port 110 is spaced apart from the two air outlets 12. The dust suction port 110 located between the two air outlets 120 and not on the same side as the two air outlets 120. The suction port 110 and the two air outlets 120, respectively, is around the thickness direction of the dust box 10.

By setting two air outlets 120 located on the opposite sides of the dust box 10, the dust suction port 110 is located between the two air outlets 120, thus the air duct formed inside the dust box 10 is more balanced, and the effective synergy between the two fans 21 is ensured, while the noise generated by the airflow is reduced.

Referring to FIG. 4, an embodiment of a first exemplary structure of the dust box 10 is described below.

The dust box 10 may include a first housing 11, a second housing 12, and a cover body 13. One side of the second housing 12 is provided over the first housing 11 to form the holding cavity 100. A recess 1210 is formed on the other side of the second housing 12, and a cover 13 is provided on the other side of the second housing 12 to form an access cavity 101. That is, the direction of the thickness of the dust box 10 is in the direction from the first housing 11 to the cover 13 and in an opposite direction. The holding cavity 100 and the access cavity 101 is spaced apart by the second housing 12 and adjacent to each other.

The first housing 11 may, for example, be provided in a slotted structure, and may include, for example, a bottom wall 111 and a side wall 112 enclosed around the bottom wall 111, with the bottom wall 111 and the side wall 112 forming the slotted structure. When the second housing 12 is provided over the first housing 11, the slotted structure is capped to form the holding cavity 100. The dust suction port 110 can be opened on the side wall 112 of the first housing 11. The dust box 10 may also include a dust suction section 14 connected to the dust suction port 110 of the first housing 11. The dust suction section 14 is set at an angle on the side back from the dust suction port 110, For example, the angle between a plane on which the side of the suction section 14 is back from the suction port 110 and a plane on which the suction port 110 is located is greater than 0° and less than 90°, for example 45°. Of course, the dust suction port 110 may also be opened in the second housing 12, and it may also be that the first housing 11 and the second housing 12 are each partially opened with a dust suction port 110 to together form the dust suction port 110 when they are covered with each other.

As shown in FIG. 4, the second housing includes, for example, a top wall 121 and an extension 122, The extension 122 is attached to an edge region of the top wall 121 and may, for example, extend in the direction of the top wall 121 toward the side of the first housing 11. The second housing 12 may include two extensions 122 opposite each other. When the second housing 12 is covered on the first housing 11 for assembly fit, the top wall 121 is covered on the side wall 112 of the first housing 11, the extension 122 is provided opposite to the side wall 112 of the first housing 11, and part of the side wall 112 of the first housing 11 is sandwiched between the two extensions 122.

One side of the top wall 121 is provided over the side wall 112. of the first housing 11 so that the second housing 12 and the first housing 11 fit to form the holding cavity 100. As shown in FIG. 4, a recess 1210 is formed on the other side of the top wall 121. Each extension 122 has a space connecting to the recess 1210, and the side of the extension 122 back from the top wall 121 may form an air outlet 120, which is connected to the space. The cover 13 is provided on the other side of the top wall 121 so that the cover 13 and the second housing 12 cooperate to form the access cavity 101, and the air outlet 120 is connected to the access cavity 101. The air outlet 120 can also be opened on the first housing 11, or on both the first housing 11 and the second housing 12,

The first housing 11 and the second housing can be connected by nesting, for example, with a nesting groove on the circumference of one side of the top wall 121 and a nesting edge on the circumference of the side wall 112 of the first housing 11. When the first housing 11 and the second housing 12 are closed, the nesting edge is embedded in the nesting groove for connection, so that the connection is tighter and can play a sealing role. The sealing effect can be strengthened by providing seals in the nesting grooves. In this embodiment, the second housing 12 and the cover 13 can be connected by nesting, for example by the fit of a nesting slot and a nesting edge.

As shown in FIG. 4, the second housing 12 may be provided with a connecting hole 1211, which runs through one side of the second housing 12 to the other side of the second housing . The connecting hole 1211 may be provided in and through the top wall 121 to allow connection between the access cavity 101 and the holding cavity 100.

The dust box assembly 1 of this embodiment may include a filter assembly, the screen assembly including a first filter 15 and a second filter 16. The filtration accuracy of the second filter 16 is :less than that of the first filter 15. In other words, the second filter 16 can act as a coarse filter (primary filter) and the first filter 15 as a fine filter (high efficiency filter). For example, for both the first filter 15 and the second filter 16, the mesh size of the second filter 16 can be larger than the mesh size of the first filter 15. For example, the second filter 16 can have 4 holes, the first filter 15 can have 100 holes, the overall size of the second filter 16 and the overall size of the first filter 15 are comparable to the size of the connecting holes 1211, so that the size of holes of the second filter 16 is larger than the size of holes of the first filter 15. As shown in FIG. 2 and. FIG. 3, the first filter 15 can be a folded filter, and the filter element of the first filter 15 is, for example, in a continuous Z-shaped folded shape.

The second filter 16 and the first filter 15 can be provided in the second housing 12 and cover the connecting holes 1211 in turn. The second housing 12 is provided with a cross-shaped bracket in the connecting hole 1211, but of course it can also be other shapes (as shown in FIG. 4, not labeled), the bracket can be used to carry the second filter 16 and the first filter 15 to stably support them. With the fans 21, objects such as garbage and debris enter the holding cavity 100 with the airflow from the dust suction port 110. The filtered air enters the access cavity 101 and is extracted through the outlet 120.

The combination setting the first housing 11, the second housing 12, and the cover 13 makes the dust box 10 stable in structure, and easy to disassemble, which facilitate the cleaning and maintenance of the dust box 10. The combination setting of the dust box 10 facilitates makes the first housing 11 and the second housing 12 cooperate to form the holding cavity 100, and the second housing 12 and the cover 13 cooperate to form the access cavity 101, thus making the holding cavity 100 better to hold debris, garbage and other objects, and at the same time making the passage cavity 101 more quickly to discharge the air from the holding cavity 100 and speed up the airflow rate.

Further, the multi-stage filter system consisted by the second filter 16 and the first filter 15 can realize multiple filters for airflow, so that debris, dust and other waste objects can be effectively filtered and stored in the holding cavity 100, to achieve good cleaning effect. The number of connecting holes 1211 can also be multiple, an example of which is given later in this embodiment.

As shown in FIG. 3, the cover 13 is used to cover the second housing 12 and mates with the second housing 12 to form the access cavity 101. In this embodiment, the cover 13 and the second housing 12 may be sealed together by a seal (shown in FIG. 4). As shown in FIG. 4, the cover 13 may include a body 131 and a top cover 132. The body 131 is formed with a mounting hole 130 corresponding to the location of the first filter 15, and the mounting hole 130 connects to the access cavity 101. When the body 131 is provided on the side wall 112 on the first housing 11. it allows the first filter 15 and the second filter 16 to be exposed. The upper cover 132 is attached to the body 131 in a rotatable manner. For example, one side of the upper cover 132 is rotated by a pivot to the inner wall of the mounting hole 130 enclosed by the body 131. The upper cover 132 can be closed by turning the mounting holes 130, or opening the mounting holes 130 so that the first filter 15 and the second filter 16 are exposed. The size of the mounting holes 130 is greater than or equal to the size of the connecting holes 1211. In other embodiments, the size of the mounting holes 130 can be smaller than the size of the connecting holes 1211.

Further, the top cover 132 can be fitted to the mounting holes 130 by a seal adapted to the shape of the mounting holes 130 to improve the sealing effect of the dust box 10 and to ensure effective suction of the dust suction port 110 and effective flow of airflow inside the dust box 10.

By providing a rotatable upper cover 132 with mounting holes 130, the second filter 16 and the first filter 15 can be easily removed or cleaned, and the mounting holes 130 can be easily observed inside the dust box 10 for inspection and repair.

For the first exemplary structure: of the dust box 10 described above, the dust box 10 may be further provided with a snap assembly 30 to facilitate snap connection of the dust box 10 to other devices. One example of the snap assembly 30 of the dust box is described specifically below.

As shown in FIG. 4, the snap assembly 30 can be used to make snap connections to other devices, thereby allowing the dust box assembly 1 and other devices to be assembled for use. Other devices are, for example, the device body of the cleaning device.

The snap assembly 30 may include a press portion 31, a resilient portion 33, and a snap bar 32. The press portion 31 connects to the snap bar 32. For example, the snap bar 32 may be a single unit, with the press portion 31 attached to the central area between the two ends of the snap bar 32. The snap bar 32 is provided with snap sections 321 protruding from. each end of the snap bar 32. As shown in FIG. 4, the number of snap bars 32 can be two, respectively connected to the press section 31 on the opposite sides, each snap bar 32 is connected to the press portion 31 at one end, and the other end extends in the direction away from the press section 31 and is provided with a snap section 321. When the dust box assembly 1 of this embodiment is snap-fitted with other devices, for example, there are snap slots correspondingly provided on the other devices, and the snap portion 321 is snap-connected to the corresponding snap slot.

The resilient portion 33 can be used to resiliently support the press portion 31. The press portion 31 is resiliently supported on the dust box 10 by the resilient portion 33. As shown in FIG. 4, the first housing 11 has a first placement slot 1110 corresponding to a notch 1213 of the second housing 12, the first placement slot 1110 extends in the same direction as the side wall 112 of the first housing 11, and the first placement slot 1110 may have a portion of the side wall 112 as its slot wall, i.e., the opening direction of the first placement slot 1110 faces the cover 13. The press portion 31 has a second placement slot 310, which extends in the opposite or substantially opposite direction to the projection of the snap portion 321. The resilient portion 33 may be a spring, one end of which extends into the first placement slot 1110 so as to be supported in the first placement slot 1110, and the other end of which may be exposed outside the first placement slot 1110. The other end of the resilient portion 33 is supported in the second placement slot 310. The second placement slot 310 may be configured to be sized to accommodate the press portion 31 to partially fit into the second placement slot 310 when the press portion 31 is pressed

As shown in FIG. 4, the other side of the second housing 12 may be further formed with a bar-holding slot 1212 spaced from each other with a recess 1210. The snap bar 32 may be accommodated in the bar-holding slot 1212. When the snap bar 32 is accommodated in the bar-holding slot 1212, the second housing 12 has a notch 1213 corresponding to the position of the pressing portion 31. Wherein the snap bar 32 is accommodated in the bar-holding slot 1212 with the snap portion 321 extending toward the cover1.3.

In this embodiment, when the second housing 12 and the cover 13 are closed, the bar-holding slot 1212 and the access cavity 101 may be isolated from each other and not connected to each other to ensure that the suction power of the dust suction port .10 makes it better to suck up garbage. Snap holes are provided on the body 131 corresponding to the location of the snap portion :321. When the pressing portion 31 is not pressed, the elastic portion 33 is resiliently supported between the first placement slot 1110 and the second placement slot 310, the snap bar 32 is held against the top, and the snap portion 321 can protrude out of the snap hole to allow snap connections to be made when assembled with other devices. When the pressing portion 31 is pressed, the elastic portion 33 is further elastically compressed, and the pressing part 31 can move toward a bottom wall 111, for example, into the first placement slot 1110, and the snap lever 32 then moves away from the cover 13 so that the snap portion 321 does not protrude from the snap hole of the cover 13, so that it can be decoupled. The snap bar 32 can be :limited by the bar-holding slot 1212, thereby limiting the pressing portion 31 from being pressed and moving further.

Both the first placement slot 1110 and the second placement slot 310 can be provided with positioning posts to position and secure the resilient portion 33, for example, with the ends of the spring on each of the positioning posts.

Referring to FIG, 5 and FIG. 6, this embodiment also provides a second exemplary structure of dust box 10 described as follows.

The first housing 11 a is provided in the form of a plate. The second housing 12 a includes a top wall 121 a and a side wall 122 a enclosing the outer perimeter of the top wall 121 a. A portion of the side wall 122 a extends from the top wall 121 a toward the first housing l1 a, and that portion of the top wall 121 a and the side wall 122 a enclose a slotted structure. The other portion of the side wall 122 a extends from the top wall 121 a toward a cover 13 a. When the second housing 12 a is provided on the first housing 11 a, the top wall 121 a, the side walls 122 a and the bottom wall 111 a form the holding cavity 100. The first housing 11 a and the second housing 12 a can be hermetically closed by suitable seals.

The dust suction port 110 is opened on the side wall 122 a of the second housing 12 a. The dust box 10 may also include a dust suction section 14 a, which may be provided on the side wall 122 a of the second housing 12 a to connect to the dust suction port 110 of the second housing 12 a, with the dust suction section 14 a set at an angle on the side hack from the dust suction port 110. For example, the angle between the plane on the side of the suction section 14 a that is away from the suction port 110 and the plane on which the suction port 110 is located is greater than 0° and less than 90°, optionally 45°. Optionally, the dust suction port 14 a is removably provided in the second housing 12 a. The dust suction port 14 a is rotatably provided in the second housing 12 a, e.g. the dust suction port 14 a is rotatably connected to the second housing 12 a on one side of its length (e.g. it can be a rotational connection by a pivot), and the dust suction port 14 a is snap connected to the second housing 12 a on the other side of its length. The length direction of the dust suction section 14 a is the same or substantially the same as the length direction of the dust suction port 110. After the dust suction section 14 a and the second housing 12 a are disconnected, the other side of the dust suction section 14 a in its length direction can be rotated around the axis of rotation of the side of the dust suction section 14 a in its length direction, so that the dust suction port 110 can be exposed for easy observation, cleaning, repair and other operations.

The side of the top wall 121 a back from the first housing 11 a is enclosed with another part of the side wall 122 a to form a recess 1210 a, and the recess 1210 a and the slotted structure adjacent to the side of the first shell 11 a are located on each side of the top wall 121 a. The cover 13 a is provided over the second housing 12 a to cooperate to form the access cavity 101. The second housing 12 a and the cover 13 a can be hermetically closed by a suitable seal.

The second housing 12 a further includes extensions 123 a. the extensions 123 a is located on opposite sides of the second housing 12 a. The extension 123 a has a space where a portion of the side wall 122 a of the second housing 12 a can serve as the outer wall of the extension 123 a (toward the outside of the dust box 10), and of course as the inner wall of the extension 123 a. When the first housing 11 a and the second housing 12 a are capped together, the space of the extension 123 a is not directly connected to the holding cavity 100, but to the access cavity 101. The extension 123 a is provided with an air outlet 120, and the air outlet 120, for example, is provided on the outer side wall of the extension 123 a, for example, as part of the outer side wall 122 a of the extension 123 a is provided with this air outlet 120, connecting to the space of the extension 123 a.

The second housing 12 a may be provided with a connecting hole 1211 a, and the connecting hole 1211 a may run through the top wall 121 a. In this embodiment, the number of connecting holes 1211 a is multiple and the shape may be, for example, circular, oval or square, etc. The connecting hole 1211 a is used to connect the access cavity 101 to the holding cavity 100.

The filter assembly includes a first filter 15 a and a second filter 16 a. The filtration accuracy of the second filter 16 a is less than that of the first filter 15 a. In other words, the second filter 16 a can be used as a coarse filter (primary filter) and the first filter 15 a as a fine filter (high efficiency filter). For example, for both the first filter 16 a and the second filter 15 a, the mesh size of the second filter 16 a can be larger than the mesh size of the first filter 15 a. For example, the second filler 16 a can have 4 holes, the first filter 15 a can have 100 holes, the overall size of the second filter 16 a and the overall size of the first filter 1.5 a are comparable to the size of the connecting holes 1211, so that the size of holes of the second filter 16 a is larger than the size of holes of the first filter 15 a. Of course, as shown in FIG. 5, the mesh surface of the first filter 15 a can be a folded filter.

The second filter 16 a is provided in the second housing 12 a and can be located inside the connecting hole 1211 a or outside the connecting hole 1211 a while covering the connecting hole 1211a. The second filter 16 a may be a monolithic and cover a plurality of connecting holes 1211a. The second filter 16 a may also be more than one and correspondingly located in each connecting hole 1211a. The first filter 15 a can be provided in the space of the extension 123 a to cover the air outlet 120 and filter the airflow coining out of the air outlet 120. The number of second filters 16 a is, for example, at least two, corresponding to at least two air outlets 120, i.e. one second filter 16 a is provided for each air outlet 120.

100641 By providing the first filter 15 a in at least two air outlets 120 correspondingly to form a filter system with multiple high-efficiency filters, so that multiple first filters 15 a can filter the airflow flowing through at least two air outlets 120 separately, which can improve the filtering effect and filtering efficiency and can further enhance the speed of airflow. Further, the plurality of connecting holes 1211 a can increase the area through which the airflow passes and avoid the problem of poor airflow caused by the accumulation of debris in the holding cavityl00.

The second exemplary structure of the dust box 10 described above uses the same construction of the snap assembly 30 as the first exemplary structure of the dust box 10. Of course, the second embodiment of the dust box 10 can also be provided with a snap assembly 30 different from the embodiment, and the different structure of snap assembly 30 is described specifically below.

Referring to FIG. 5 and FIG. 6, the snap assembly 30 includes a pressing portion 31 a, a snap bar 32 a, and a resilient portion 33 a, the pressing portion 31 a connects to the snap bar 32 a. For example, the snap bar 32 a may be a single unit, such as the pressing portion 31 a attached to the central area between the two ends of the snap bar 32 a. The snap bar 32 a is provided with snap sections 321 a protruding from each end of the snap bar 32 a. As shown in FIG. 5, the number of snap bars 32 a can be two, respectively connected to the press section 31 on the opposite sides, each snap bar 32 a is connected to the press portion 31 a at one end, and the other end extends in the direction away from the press section 31 a and is provided with a snap portion 321 a. The resilient portion 33 a is provided at the pressing portion 31 a, and the resilient portion 33 a is able to rotate with respect to the dust box 10. The pressing portion 31 a is able to rotate relative to the dust box 10 by means of the elastic portion 33 a.

As shown in FIG. 5, the other side of the second housing 12 a may be further formed with a rod-holding slot 1212 a spaced from each other with the recess 1210a. When the second housing 12 a and the cover 13 a are closed, the bar-holding slot 1212 a and the access cavity 101 may be isolated from each other and not connected to each other to ensure that the suction power of the dust suction port 110 makes it better to suck up garbage. As shown in FIG. 6, the snap bar 32 a and the press portion 31 a may be accommodated in the bar-holding lot 1212 a. For example, part of the bar-holding slot 1212 a corresponding to the snap bar 32 a fits the profile of the snap bar 32 a, and part of the bar-holding slot 1212 a corresponding to the pressing portion 31 a fits the profile of the pressing portion 31 a. When the snap bar 32 a and the pressing portion 31 a are accommodated in the bar-holding slot 1212 a, the elastic portion 33 a deforms elastically as the pressings portion 31 a is pressed.

The resilient portion 33 a includes, for example, a rotating rod 331 a, a torsion spring 332 a, and an attachment body 333 a, which is fixed to the pressing portion 31 a, A torsion spring placement slot (not marked) is opened in the connection body 333 a, for example in the central area with the connection body 333 a. The rotating rod 331 a is set along the length of the connection body 333 a through the connection body 333 a, specifically through one end of the connection body 333 a, the torsion spring placement slot, and the other end of the connection body 333 a, while protruding from both ends of the connection body 333 a. The torsion spring 332 a is provided on the portion of the rotating rod 331 a that is located in the torsion spring placement slot. Other springs can be used instead of torsion springs 332 a.

The ends of the rotating rod 331 a can he set directly rotating in the second housing 12 a. The rotating rod 331 a may also be provided indirectly rotating in the second housing 12 a. For example, as shown in FIG. 5 and FIG. 6, the snap assembly 30 may also include a fixed portion 34 a, which has a slot for the attachment body, and the fixed portion 34 a has holes on each side of the wall of the attachment body, and the portion of the rotating rod 331 a projecting from the ends of the attachment body 333 a is inserted into the holes, enabling a rotating connection. With the pressing portion 31 a and the snap bar 32 a, placed in the bar-holding slot 1212 a, the fixing portion 43 a is fixedly connected to the second housing 12 a, for example by screws. The ends of the torsion spring 332 a can be limited by the second housing 12 a and the connector 333 a, respectively, to allow for elastic deformation during relative rotation.

When the snap rod 32 a is accommodated in the bar-holding slot 1212 a, the snap portion 321 a extends toward the cover 13 a, When the pressing portion 31 a is pressed in the direction of the bottom wall 111 a, the pressing portion 31 a rotates along the axis of the rotating rod 331 a, and the torsion spring 332 a can further undergo elastic deformation, so that the snap portion 321 a can be displaced and move in the direction of the bottom wall 111 a. When the pressure on the pressing portion 31 a disappears, the torsion spring 332 a causes the pressed portion 31 a to rotate in the opposite direction (relative to the pressed state) due to the elastic return force, driving the snap portion 321 a to move in the opposite direction away from the bottom wall 111 a.

Snap holes can be provided in the body of the cover 13 a corresponding to the location of the snap portion 321 a. When the pressing portion 31 a is not pressed, the snap portion 321 a protrudes out of the snap hole, so that the snap connection can be made. When the pressing portion 31 a is pressed and is subjected to pressure in the direction of the bottom wall 111 a, the pressing portion 31 a is rotated along the axis of the rotation rod 331 a in the direction of the bottom wall 111 a, causing the snap part 321 a to be displaced in the direction of the bottom wall 111 a, so that the snap hole of the cover 13 a does not protrude out and the snap process is facilitated. As the pressed portion 31 a is pressed further and rotated, the snap bar 32 a can be limited by the bar-holding slot 1212 a, thereby limiting the pressed portion 31 a from being pressed and moving further.

The flexible rotating snap assembly 30 makes the snap easy connected and more stable, and its structure is further simplified compared to the previous structure.

Referring to FIG. 7 to FIG. 9, this embodiment describes a third embodiment of the dust box 10.

As shown in FIG. 9, the dust box 10 is provided with at least two connecting holes 1211 b spaced from each other. There are two connecting holes 1211 b in this embodiment, and a projection point D of a center C of the dust suction port 110 on the line connecting a center A of one connecting hole 1211 b and a center B of another connecting hole 1211 b is located between the centers A, B of those two connecting holes 1211 b. Equivalently, a plumb line is made across the center C of the dust suction port 110 for the line connecting the centers A, B of the two connecting holes 1211 b, and the intersection D where the plumb line intersects the lines connecting the centers A, B of the two connecting holes 1211 b is located between the centers A, B of the two connecting holes 1211 b. The center C of the dust suction port 110 is the geometric center of a geometric shape that is the same as and matches the shape of the dust suction port 110 or the center of gravity of a homogeneous object that is the same as and matches the shape of the dust suction port 110. Similarly, the centers A and B of the connecting holes 1211 b are the geometric centers of geometric shapes that are identical and match the shape of the connecting holes 1211 b, or the centers of gravity of homogeneous objects that are identical and match the shape of the connecting holes 1211 b.

As shown in FIGS. 7 and F1G. 8, the dust box 10 includes a first housing 11 b, a second housing 12 b, and a cover 13 b. The second housing 12 b is provided over the first housing 11 b to enclose the holding cavity 100, and the cover 13 b is provided over the second housing 12 b to enclose the access cavity 101.

As shown in FIG. 8, the first housing li3 b, for example, is provided in a slotted shape, and may specifically include a bottom wall 111 b and a side wall 112 b enclosed around the bottom wall 111 b, with the bottom wall 111 b and the side wall 112 b enclosed in a slotted structure. When the second housing 12 b is capped on the first housing 11 b, the slotted structure of the first housing 11 b can be capped into the holding cavity 100. The first housing 11 b may, for example, form a dust suction port 110 on the side wall 112 b, which is connected to the slotted structure, i.e. to the holding cavity 100.

The second housing 12 b may he substantially plate shaped. At least two connecting holes 1211 b may be provided in the second housing 12 b, the connecting holes 1211 b running through one side of the second housing 12 b to the other side of the second housing 12 b. The connecting hole 1211 b connects to the holding cavity 100. The installation of at least two connecting holes 1211 b enables the airflow entering the dust suction port 110 to form a plurality of flow directions, so that the inhaled waste does not accumulate only adjacent to the dust suction port 110, but can be scattered and accumulated with different air ducts, which can improve the space utilization of the dust box 10.

As shown in FIG. 9, the projection point D of the center C of the dust suction port 110 on the line connecting the center A of the one connecting hole 1211 b and the center B of the other connecting hole 1211 b is located between A and B, so that the airflow entering the dust suction port 110 can be diverted to both sides of the center C, for example, to one connecting hole 1211 b and the other connecting hole 1211 b and the other connecting hole 1211 b. This improves the flow direction of the airflow and allows the inhaled objects to accumulate from both sides, improving the space utilization of the dust box 10.

In some implementations, as shown in FIG. 8, the two connecting holes 1211 b may be arranged in a direction substantially along the length of the second housing 12 b, so that the two connecting holes 1211 b are spaced apart and located in the area adjacent to the two ends of the second housing 12 b in its length direction (the direction of the line connecting the two ends is substantially the length direction of the second housing 12 b), which enables the garbage objects to be drawn into the When the dust box 10 is sucked into the dust box, it will follow the airflow and accumulate on both sides, improving the situation that the dust objects are concentrated in the area. adjacent to the dust suction port 110, reducing the phenomenon of blocking the dust suction port 110, and improving the space utilization of the dust box 10. Further, the two connecting :holes 1211 b may be positioned adjacent to the side of the first housing 11 b opposite the dust suction port 110 (the side away from the vacuum port 110), and the line between the centers of the two connecting holes 1211 b and the center of the dust suction port 110 is triangular, such as an isosceles triangle. The second housing 12 b can also be the one shown in the first embodiment of the dust box 10.

The setting position of the connecting holes 1211 b can be adjusted by specifically designing the structure of the first housing 11 b, the second housing 12 b, and the third housing 13 b.

As shown in FIG. 10, in one embodiment, the second housing 12 b includes a top wall and a side wall, while the first housing 11 b is provided in the form of a plate, the third housing 13 b is provided over the first housing 11 b, and the second housing 12 b separates the holding cavity 100 from the access cavity 101. At least two of the connecting holes 1211 b are partially opened in the top wall and partially opened in the side wall, both connecting to the holding cavity 100 and the access cavity 101. Of course, at least two connecting holes can also be opened on the opposite sides of the second housing 12 b, respectively.

As shown in FIG. 11, in another embodiment, the first housing 11 b includes a bottom wall and a side wall, and the second housing 12 b is provided over the side wall of the first housing 11. The third housing 13 b is provided on the bottom wall of the first housing 11 b. The second housing 12 b separates the holding cavity 100 from the access cavity 101. At least one of the at least two connecting holes 1211 b is opened in the second housing 12 b and at least the other is opened in the side wall of the first housing 11 b, and both are connected to the holding cavity 100 and the access cavity 101. Of course, at least two connecting holes 1211 b can also be opened on opposite sides of the wall of the first housing 11 b, respectively.

Optionally, the dust box assembly 1 may include at least two filter assemblies, each for filtering the airflow from one connecting hole 1211 b. Each screen assembly includes a first filter 15 b, and the number of first filters 15 b and connecting holes 1211 b may correspond to each other. The first filter 15 b may be provided within the connecting hole 1211 b to allow for filtration of the airflow, for example, it may be partially accommodated within the connecting hole 1211 b. Of course, the first filter 15 b can be provided on the side of the second housing 12 b toward the cover 13 b and correspondingly cover the connecting holes 1211 b so that the airflow can be filtered. Optionally, each filter assembly may also include a second filter 16 b, with the first filter 15 b having a greater filtration accuracy than the second filter lob. The second filter 16 b can be provided inside the connecting hole 1211 b, and the first filter 15 b covers the second screen 16 b, with the first filter 15 b being closer to the cover 13 b than the second filter 16 b. In other words, the first filter 15 b is located downstream of the airflow compared to the second filter 16 b, and the airflow passes through the second filter 1.6 b and the first filter 15 b in turn for double filtration,

By setting at least two connecting holes 1211 b, corresponding to the setting of at, least two first filters 15 b, the airflow entering the holding cavity 100 through the dust suction port 110 can form at least two ducts, thus changing the duct flow direction and optimizing the flow of airflow, so that the garbage being sucked into the dust box 10 can be stored more effectively, thus being able to improve the space utilization of the dust box 10, making the filtering of the dust box 10 Better efficiency, higher cleaning efficiency, so as to enhance the suction power of the dust suction port 110.

The cover 13 b is provided over the second housing 12 b to enclose the access cavity 101. For example, the cover 13 b is formed with a recess (not shown) on the side facing the second housing 12 b, and the cover 13 b and the second housing 12 b close together and enclose the recess to form the access cavity 101. Of course, the structure of the cover 13 b and the second housing 12 b can also be as the cover 13 and the second housing 12 in the first embodiment of the dust box 10.

Optionally, the dust box 10 can also include a rotating member 17 b, and the cover 13 b can achieve a rotating connection with the first housing 11 b through the rotating member 17 b, so that the first housing 11 b and the cover 13 b can close or open with each other. When the first housing 11 b and the cover 13 b are opened to each other, they can make the second housing 12 b exposed, which can facilitate the cleaning and maintenance of the first filter 15 b and the second filter 16 b, etc. The rotating member 17 b includes a rotating shaft 171 b, a first shaft receiving portion 172 b provided in the first housing 11 b, and a second shaft receiving portion 173 b provided in the cover 13 b and the ends of the rotating shaft 171 b are embedded in the first shaft receiving portion 172 b and the second shaft receiving portion 173 b, respectively, to enable relative rotation between the first housing 11 b and the cover 13 b.

The cover 13 b includes a body 131 b and an upper cover 132 b. The body 131 b is formed with a mounting hole 130 b corresponding to the location of the first filter 15 b, and the mounting hole 130 b connects to the access cavity 101. When the body 131 b is provided on the side wall 112 b on the first housing 11 b, the second filter 16 b and the first filter 15 b can be left exposed. The upper cover 132 b is attached to the body 131 b in a rotatable manner. For example, one side of the top cover 132 b is rotated by a rotating axis to the inner wall of the mounting hole 130 b enclosed by the body 131 b. The upper cover 132 b can be closed by turning the mounting holes 130 b, or opening the mounting holes 130 b so that the second filter 16 b and the first filter 15 b are exposed. The mounting holes 130 b are provided opposite to the connecting holes 1211 b and the size of the mounting holes 130 b is greater than or equal to the size of the connecting holes 1211 b. In other embodiments, the size of the mounting hole 130 b can be smaller than the size of the connecting hole 1211 b.

Further, the top cover 1321 can be fitted to the mounting holes 130 b by means of a seal adapted to the shape of the mounting holes 130 b (shown in FIG. 4, but not labeled) to improve the sealing effect of the dust box 10 and to ensure effective suction of the dust suction port 110 and effective airflow inside the dust box 10.

By providing a rotatable top cover 132 b with mounting holes 130 b, the second filter 16 b and the first filter 15 b can be easily removed or cleaned, and the mounting holes 130 b can be easily observed inside the dust box 10 for inspection and repair.

The air outlet 120 can be opened in the cover 13 b. When the second housing 12 is the one in the first embodiment of the dust box 10, the air outlet 120 can also be opened in the second housing 12. The cover 13 may also be provided with snap holes.

In one embodiment, as shown in FIG. 7, the first filter 15 b is set at an angle when partially accommodated in the connecting hole 1211 b. For example, the first filter 15 b can be tilted in the direction of the air outlet 120, so that the airflow filtered by the first filter 15 b can be quickly delivered to the air outlet 120. There is an angle between a side of the first filter 15 b adjacent to the cover 13 b and a side of the second housing 12 b toward the cover 133 b, such as an angle greater than 90° and less than 180°.

A notch 1213 b is formed on one edge of the second housing 12 b away from the dust suction port 110, and a side of the second housing 12 b toward the cover 13 b is provided with a projection 1212 b, with the projection 1212 b surrounding the notch 1213 b. The cover 13 b is formed with a mating slot (not shown) on the side toward the second housing 12 b, and the shape of the mating slot is adapted to the shape of the projection 1212 b, and when the cover 13 b is capped to close the second housing 12 b, the cover 13 b projection 1212 b can be embedded in the mating slot to allow the access cavity 101 and the notch 1213 b to be spaced apart. As shown in FIG. 8, the first housing 11 b has a first placement slot 1110 b with the first placement slot 1110 b opening oriented. toward the cover 133 b, corresponding to the notch 1213 b of the second housing 12 b. When the second housing 12 b is provided on the first housing 11 b, the holding cavity 100 and the first placement slot 1110 b are spaced apart and not connected to each other.

In the third embodiment of the dust box 10 described above, the dust 10 can be further provided with a snap assembly 30 to facilitate snap connection of the dust box 10 to other devices. A further example of the snap assembly 30 of the dust box assembly 1 is described specifically below.

The snap assembly 30 may include a pressing portion 31 b, a snap portion 321 b protruding from the pressing portion 31 b, and a resilient portion 33 b. Snap portion 321 b is used for snap connection to the snap slot of the device body. The elastic portion 33 b is used to support the pressing portion 3 lb. The pressing portion 3 lb is formed with a second placement slot 310 b, and the shape of the pressing portion 31 b is adapted to the shape of the notch 1213 b, for example. The opening direction of the second placement slot 310 b is opposite to the projection direction of the snap portion 321 b. The resilient portion 33 b is, for example, a resilient member such as a spring, and one end of the resilient portion 33 b extends into the second placement slot 310 b and the other end extends into the first placement slot 1110 b. When the first housing 11 b, second housing 12 b and cover 13 b are composed together, the other end of the resilient portion 33 b is positioned in the first placement slot 1110 b to support the pressing portion 31 b and the snap portion ,121 b. The snap portion 321 b corresponds to the snap hole of the cover 13 b. The first placement slot 1110 b is provided with sliding slots on opposite sides of the wall 112 b, and the corresponding sides of the pressing portion 31 b are provided with sliding rails, and the sliding rails are embedded in the slots to enable the pressing portion 31 b to slide in the first placement slot 1110 b.

When the pressing portion 31 b is not pressed, the resilient portion 33 b is resiliently supported between the first placement slot 1110 b and the second placement slot 310 b, and the pressing portion 31 b is held against the top so that the snap portion 321 b can protrude out of the snap hole to allow for a snap connection with the device body when assembled. When the pressing portion 31 b is not pressed, the elastic portion 33 b is further elastically compressed, and the pressing portion 31 b is able to move toward the first housing 11 3 b, such as moving into the first placement slot 1110 b, and the snap portion 321 b moves away from the cover 13 b so that the snap portion 321 b does not protrude from the damping hole of the cover 133 b, so that it can be unclamped.

By way of example, in one embodiment, a sweeping robot comprises a device body and a dust box assembly 1, the device body is used to clean the floor.

The device body includes a housing, a brush set in the housing, and a drive motor that drives the brush to roll. The device body can be used in conjunction with the dust box assembly 1 of this embodiment, for example, the housing of the device body has a snap slot opened in the housing for snap connection with the snap portion 321 (321 a, 321 b). When pressure is applied to the pressing portions 31 (31 a, 31 b), the elastic deformation of the elastic portions 33 (33 a, 33 b) enables the pressing portions 31 (31 a, 31 b) to drive the snap portions 321 (321 a, 321 b) away from the snap slot to enable the snap portions 321 (321 a, 321 b) to be decoupled from the snap slot. When the pressing portions 31 (31 a, 31 b) is not pressed, the elastic recovery force of the elastic part 33 (33 a, 33 b) can cause the pressing portions 31 (31 a, 31 b) to drive the snap portions 321 (321 a, 321 b) to move close to the snap slot or remain close to the snap slot, so that the snap portions 321 (321 a, 321 b) can be snap connected to the snap slot.

This embodiment provides the snap assembly 30 to facilitate the connection of the device body and the dust box assembly. In some embodiments, the snap assembly 30 includes two snap portions 321 (321 a), which can make the snap connection between the dust box assembly 1 and the device body of this embodiment tighter and enhance the fixation effect of both structures, and the setting of two snap portions 321 (321 a) can further :limit the relative displacement of the dust box 10 and the shell of the device body to ensure the stability of the structure.

The connector 22 of the dust suction assembly 20 of this embodiment can be fixed to the housing of the device body. The good snap effect and limiting effect of the snap assembly 30 prevents the dust box 10 and the device body from shifting so that the sealing effect of the connector 22 and the air outlet 120 can be effectively ensured.

In order to further enhance the speed of airflow and to optimize the structure, this embodiment provides an embodiment of the connector 22 as follows.

Retelling to FIG. 12, the profile of the connector 22 of this embodiment may be irregularly shaped. One side of each connector 22 may be formed with a first vent 221, which is used to connect to the air outlet 120 corresponding to the connector 22, and a second vent 222 connected to the first vent 221 is formed on the other side of the connector 22. The fan 21 corresponding to the connector 22 is provided on the other side of the connector 21 and is connected to the second vent 222. The shape of the first vent 221 can be adapted to the shape of the air outlet 120 or can be designed on a case-by-case basis. For example, the shape of the first vent 221 shown in FIG. 9 is adapted to the shape of the air outlet 120 shown out in FIG. 1 to FIG. 6. The first vent 221 as shown in FIG. 9 can be shaped specifically according to the outlet 120 shown in FIG. 7 and FIG. 8 so that the two are adapted to each other. In this embodiment, it does not limit the shape of the connector 22, the first vent 221, and similarly the second vent 222.

For example, the first vent 221 on one side of the connector 22 and the second vent 222 on the other side of the connector 22 can be staggered, for example, after the connector 22 is assembled with the dust box 10, the projection of the first vent 22.1 on the plane where the air outlet 120 is located and the projection of the second vent 222 on the plane where the air outlet 120 is located can partially overlap or completely not overlap. The interior of the connector 22 has spaces which have a first vent 221 and a second vent 222, respectively. In this way, the path of the airflow within the connector 22 may be curved,

In this embodiment, the angle between the plane in which the first vent 221 is located and the plane in which the second vent 222 is :located is greater than 0° and less than 180°. The angle between the plane in which the first vent 221 is located and the plane in which the second vent 222 is located is greater than or equal to 20° and less than 100°. The angle between the plane in which the first vent 221 is located and the plane in which the second vent 222 is located is greater than or equal to 30° and less than or equal to 90°. The angle between the plane in which the first vent 221 is located and the plane in which the second vent 222 is located is greater than or equal to 40° and less than or equal to 60°. The angle between the plane in which the first vent 221 is located and the plane in which the second vent 222 is located is 46°.

Referring to FIG. 13, in another embodiment of the connector 22, the main difference from the above embodiments is the provision of a spacer 223 within the first vent 221 of the connector 22, which has one or more spaced through holes. The connector 22 is connected between the fan 21 and the air outlet 120, and the through hole can connect the second vent 222 to the air outlet 120. By further providing the spacer 223, it can be used to block foreign objects from entering the fan 21 through the first vent 221 and causing interference or damage to the fan 21.

The fan 21, for example, is an extractor fan or blower, both of which can achieve the role of extracting air. The fan 21 is provided on the other side of the corresponding connector 22 and is connected to the second vent 222. When the fan 21 is in operation, the airflow is pumped out by the fan 21 through the suction portion 110, the holding cavity 100, the access cavity 101, the space of the extension 122, the outlet 120, and the first and second vents 221 and 222, in that order.

In this embodiment, the connector 22, when connected to the corresponding air outlet 120, can be sealed by a seal 24, for example a sealing rubber ring. That is, the seal 24 may be provided at the connection of the first vent 221 and the outlet 120 to seal the connection.

This embodiment can optimize the air duct of the whole dust box assembly 1 by setting the ventilation structure of the connector 22 and the angle between the plane where the first vent 221 is located and the plane where the second vent 222 is located, so that the air flow is faster. Moreover, the angle between the plane where the first vent 221 is located and the plane where the second vent 222 is located can make the fan 21 have a certain inclination when installed (as shown in FIG. 1), which can effectively save the installation space of the fan 21.

As shown in FIG. 2, the dust suction assembly 20 of this embodiment may further include a vibration dampening pad 23, and the other side of the connector 22 with the second vent 222 is formed with a holding slot 223, the holding slot 223 is connected to the second vent 222, the shape of the holding slot 223 is adapted to the shape of the vibration dampening pad 23, the vibration dampening pad 23 is placed in the holding slot and located between the fan 21 and the connector 22.

By setting the housing slot 223 to accommodate the vibration dampening pad 23, the fan 21 through the vibration dampening pad 23 set on the connector 22, can make effective reduce the vibration of the fan 21, so as to avoid impact of vibration of the fan 21 on the connector 22 and ensure the sealing effect, thereby the air extraction effect of the fan 21 can be ensured.

The cleaning device 300 described in the cleaning device embodiment of this application is, for example, the aforementioned sweeping robot or vacuum cleaner, etc., but is not limited to sweeping robots and vacuum cleaners. Referring to FIG. 14, the cleaning device 300 of this embodiment includes: the device body 2 and the dust box assembly 1 described in the above embodiments.

For example, for a vacuum cleaner, the device body 2 includes, for example, a housing, a circuit board, etc. It can also include a floor brush, which is connected to the housing via an air duct. The dust box assembly 1 can be provided in the housing of the device body 2 for adsorbing debris, dust, etc. through the floor brush and air duct.

For a sweeping robot, the device body 2 includes, for example, a housing, a roller brush, and a motor to drive the roller brush to roll. The roller brush is used to sweep the trash, debris, dust, etc., and the dust box assembly 1 is used to adsorb the trash, debris, dust, etc., swept by the roller brush.

In summary, this application can pro greater suction power and more stable air 4 through at least dual fan 21 and dual air duct design, effectively enhancing the cleaning effect. This application can optimize the airflow direction in the dust box 10. and air duct design to improve the filtering effect and cleaning effect of the dust box 10 by setting at least two connecting holes 1211 for setting the first filter 15 respectively.

The above is only an implementation of this application, and is not intended to limit the scope of this application. Any equivalent structure or equivalent process transformation using the contents of this application and the accompanying drawings, or any direct or indirect application in other related technical fields, is included in the scope of patent protection of this application. 

What is claimed is:
 1. A dust box assembly comprising: a dust box configured with a holding cavity, a dust suction port, and at least two air outlets, the dust suction port is connected to the holding cavity, and the at least two air outlets is connected to the holding cavity respectively; and at least two fans provided corresponding to the at least two air outlets, the fans are used to form an air stream passing through the dust suction port, the holding cavity, and the air outlets in turn.
 2. The dust box assembly according to claim 1, wherein the dust box assembly comprises at least two connection members, the connection members, the fans, and the air outlets are corresponded one by one, the connection members are provided between the corresponding fans and air outlet.
 3. The dust box assembly according to claim 2, wherein, a first vent is formed on one side of each connection member, the first vent is used to connect to the air outlet corresponding to the connection member; a second vent connected to the first vent is formed on the other side of the connection member, the fan corresponding to the connection member is set on the other side of the connection member and connected to the second vent; the angle between the plane in which the first vent is located and the plane in which the second vent is located is greater than 0° and less than 180°.
 4. The dust box assembly according to claim 3, wherein, the dust box assembly includes a vibration dampening pad, the connection member is configured with a holding slot connected to the second vent, the holding slot has a shape adapted to the shape of the vibration dampening pad, the vibration dampening pad is placed in the holding slot and located between the fan and the connection member.
 5. The dust box assembly according to claim 3, wherein, the connection member includes a spacer plate set the first vent, the spacer plate is opened with one or more through holes.
 6. The dust box assembly according to any one from claims 1 to 5, wherein, the dust box is formed with an access cavity adjacent to the holding cavity in a thickness direction of the dust box; the access cavity is connected to the holding cavity and the air outlet, the access cavity is located downstream of the airflow as compared to the holding cavity; wherein the size of the access cavity in the thickness direction of the dust box is less than or equal to the size of the holding cavity in the thickness direction of the dust box.
 7. The dust box assembly according to claim 6, wherein, the dust box comprises a first housing, a second housing, and a cover, the second housing is covered on one side of the first housing to form the holding cavity, the cover is covered on the other side of the second housing to form the access cavity; the dust suction ports are opened on the first housing or the second housing, the at least two air outlets are opened at intervals on the second housing, the dust suction ports are spaced from the at least the dust suction ports, and the dust suction ports and the at least two air outlets are set around the thickness direction of the dust box.
 8. The dust box assembly according to claim 7, wherein, the second housing is provided with a connecting hole, the connecting hole running through one side of the second housing to the other side of the second housing to connect the access cavity and the holding cavity. the dust box assembly comprises a first filter and a second filter, the second filter and the first filter are provided in the second housing and covering the connecting holes in turn; or the second filter is provided in the second housing and covering the connecting holes, a number of the first filters is at least two, at least two of the first filters are provided in the second housing and covering the at least two air outlets respectively. wherein the filtration accuracy of the second filter is less than the filtration accuracy of the first filter
 9. The dust box assembly according to claim 8, wherein, the cover comprises a body and a top cover, the body having a mounting hole formed at a position corresponding to the first filter, the mounting hole is connected to the access cavity, the top cover is rotatably attached to the body so as to close or open the mounting hole by rotation, wherein the size of the mounting hole is greater than or equal to the size of the connecting hole.
 10. The dust box assembly according to claim 8, wherein, the dust box includes a snap assembly for snap connection to a device body of a cleaning device.
 11. A dust box comprising: a holding cavity, a dust suction port and at least two air outlets, the dust suction port is connected to the holding cavity and the at least two air outlets are connected to the holding cavity, wherein each the air outlet is used to connect a fan so that the fan is used to form an airflow through the dust suction port, the holding cavity and the air outlets in turn.
 12. A dust box assembly comprising: a main body; a dust box assembly as claimed in any one of claims 1-10, the dust box assembly is connected to the main body. 